Is Drone Cleaning Worth It?

For an occupied building of three stories or more, yes: the two Miami projects we have delivered came in at $0.20 per square foot all in on 130,000+ square feet in seven days, and about 29% below traditional pricing on a full exterior wash finished in 48 hours, with no lifts, scaffolding, swing stages or rope access and no closures. For a single-story wall or window run with clear ground access, a water-fed pole crew is usually cheaper and you should hire that instead.

Yes, for the soiling glass actually collects in South Florida: salt film, dust, pollen, bird droppings and biological growth. A tethered drone applies a low-pressure detergent and rinses with de-ionized water at 0 TDS, so nothing is left to dry into spots. What it does not do is scrub. Mineral etching and hard-water staining bonded into the glass are restoration work, not cleaning, and no rinse method removes them. On the Miramar Centre II wash we paired the drone on the facade with water-fed poles at grade for exactly that reason.

Commercial exterior cleaning runs $0.12–$0.25 per square foot, fixed after a free site survey, and bigger jobs get lower rates. Small residential roofs run $0.25–$0.35 per square foot with no minimum charge, so most single-family homes land at $500–$1,200. Recurring maintenance takes 20–30% off each visit.

Wind: our drones fly in sustained wind up to 25–30 mph and we pause above that, so a windy day slides the schedule. Airspace: most of Miami-Dade is controlled airspace, so every job needs an FAA LAANC authorization filed in advance. Ground footprint: the tethered rig and a coned exclusion zone need space at the base of each elevation. Scope: a drone cannot work inside a covered parking deck, cannot caulk or restore glass, and cannot remove mineral etching. Batteries are hot-swapped in sets of up to 19 minutes while water and power come up the tether, so flight time itself is not the constraint people expect.

On the contaminants a building collects between cleanings, the finish is the same because the rinse water carries nothing that can dry into a streak. The honest gap is bonded contamination: paint overspray, adhesive, hard-water etching. Those need contact and are restoration tasks whichever method you use. A drone contractor who promises to remove them from the air is overselling.

Safer than the alternatives it replaces, because nobody works at height and nothing touches the facade. Soft wash runs at roughly 300 PSI, far below pressure washing, so seals, stucco and EIFS are not hammered. Pilots hold FAA Part 107 certificates, a ground spotter keeps a coned exclusion zone under the active elevation, and we carry $2M general liability. Tenants keep their entrances and lanes; on both delivered jobs nothing closed.

Up to 200 ft, about 18 stories, from a single staging position. Taller towers are cleaned by staging from podiums, setbacks or the roof rather than by flying higher.

That is a different question from whether it is worth hiring. An industrial cleaning drone and its ground rig are a six-figure purchase and need a Part 107 pilot, pure-water filtration and aviation insurance before the first job. If you are weighing buying against hiring, our buying-versus-hiring guide works the numbers; for a building owner the answer is almost always to hire.